Issel E P
Zentralbl Gynakol. 1978;100(9):560-7.
Parameters which have influence on the accuracy of the calculation of fetal weight. We estimated about 1500 cases in which we within three days before birth carried out an ultrasonic measurement. Most of the differences between the calculated prenatal and the scaled postnatal weight are caused by errors of measurement and abnormalities of the fetal development in pathologic pregnancy. In severe intrauterine retardation the actual fetal weight will be calculated about 600 g to heavy. In fetopathia diabetica with fetal hypertrophy the weight will be calculated about 400 g to small. Opposite to these sources of error the biologic variation and the inaccuracy involved by the mathematical regression model are small. The regression formula should be adapted by 1000 cases.
影响胎儿体重计算准确性的参数。我们估计了约1500例在出生前三天内进行超声测量的病例。产前计算体重与产后实际体重之间的大多数差异是由测量误差和病理性妊娠中胎儿发育异常引起的。在严重的宫内生长迟缓中，实际胎儿体重计算会偏重约600克。在患有胎儿肥大的糖尿病胎儿病中，体重计算会偏轻约400克。与这些误差来源相反，生物变异和数学回归模型所涉及的不准确性较小。回归公式应根据1000例病例进行调整。
